Datagridview Bound To A Datatable Setting Its Datasource Property To The Datatable

May 20, 2011

I have a datagridview bound to a datatable setting its datasource property to the datatable. I would like to have a child form that contains a list of columns associated with the datatable that contains a checkbox that will allow the user to hide and show the columns ( I do not know the best control to use here) (I assume this is the easy part as All i need to do is loop through each of the datatable's columns to get the column name)

now I would like save these visible columns on some event like form_closing so that the next time the user opens the form up it will remember the settings

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Update DataGridView Bound To DataTable?

Mar 21, 2012

I have a DataGridView bound to a DataTable. Although all rows are displayed in the grid, the table represented by the Grid's DataSource does not get updated after changing values in one or more DataGridView columns. Both grid and table contain a Primary Key. What am I missing here? Do I need to do something in the RowValidated event?

dgvCriticalContacts.AutoGenerateColumns = False
Dim ccRs As DataTable = Common.OpenRecordset("SELECT * FROM PhoneList")
dgvCriticalContacts.DataSource = ccRs

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Add An Unbound Column To A DataGridView Whose DataSource Is A DataTable

Apr 5, 2010

Let's say that I have a DataGridView(myDGV) which I populate as follows:

Dim strSQL as String = "SELECT col1,col2,col3 FROM myTable"
myDGV.DataSource = myDtb.
'The above code fills the DGV with data from the underlying query
'of the DataTable.

'Supposing that I want to add an unbound Column to the end of the DGV which appears together with the data returned by the query, is it possibe?

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Dynamically Created Datatable Set As Datasource Of Datagridview?

Jul 25, 2011

Dim GridDTB as Datatable[code]...

It is updating only on the table "DT3", which is last create table in the array.

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Forms :: Put DataGridView DataSource Into A DataTable From Base Form?

Jul 15, 2010

I have a base form and I am trying to get the DataSource of the ActiveControl if the control is a datagridview.What I have so far is:

Dim curControl As Control = Me.ActiveControl
Dim ControlType As String = curControl.GetType.ToString()
If ControlType = "System.Windows.Forms.DataGridView" Then


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Get Datagridview Table Row When Datagridview Datasource Is DataTable?

Dec 8, 2010

My application must display some data in Datagridview (status of COM ports communication) and i Used .mdb databases before for faster search and Datagridview update. How i understand Datagridview is importing data from DataTable and data in DataTable is imported from .mdb file, so i decided to make shortcut - stop to using .mdb file (data must be erased every time application start and it is useless make .mdb file and erase it every time, becouse it is increasing even when drop is used) and using only DataTable..

I want to row in Datagridview change it color to red when it's Collumn(6).text countains %error% string..

When Error in COM port is starting, i can fast find row in DataTable for that port and write information that Error accured for that port and DataGridview automatically updates:

Dim RRow as () DataRow
RRow = ds.Select("Port = 'COM3')
RRow(0).Item(6) = "Error Opening COM3"

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VS 2005 Datatable Vs Dataview - Apply A Filter To The Defaultview.rowfilter Property Of That Datatable

Mar 15, 2010

I have a datatable and I apply a filter to the defaultview.rowfilter property of that datatable. If I then loop through the rows collection of the datatable, will I only be able to see those rows that the filter applies to, or will it loop through all the rows?

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Get DataTable From GridvMyGridview.DataSource?

Jul 10, 2012

using 2008question: i found this c# code snippet and wondering how do you do this in dataTable = gridview.DataSource as DataTable;

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Remove A Datatable From Datasource?

Dec 6, 2011

I have a datasource attached to an Access DB. I have a problem if I remove a datatable from my datasource(which contains lots of datatables). I have to manually remove the reference to that datatable from the designer file for each form that uses the dataset.

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Bound Datatable To Values Of A Datetimepicker?

Mar 4, 2010

this is my datatable i want each value of a datetimepicker to view the data

dim booking_table as new datatable
"Time", GetType(String))


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Can't Add Item To Listbox Bound To Datatable

Feb 24, 2009

I have a listbox bound to a datatable, and controls that are bound to the same datable. As you navigate through the listbox, the controls correctly reflect the selected item, and changes to the controls update the dataset OK as well.Now I'm trying to add a "New" capability to the form. So on the click for "New", I deselect the currently selected item and clear the controls[cod]e...

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VS 2008 Datagrid Bound To Datatable?

May 30, 2009

I have a check box column in a datagrid which is bound to a dataTable.My problem is if I check/uncheck some checkbox items in one row and then move to another row, the checkboxes that I checked/uncheck are reset back to their original state. Is there a way to maintain the edited checkbox state of items between rows?

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Get An Integer Value From A ComboBox Using A DataTable As Its DataSource

Jun 23, 2010

I am using code similar to this to populate a combobox with items from a database. The display works fine, but when I try to get the combobox.SelectedValue it is returning a DataRowView, where I need an integer. Obviously this is becuase I haven't casted the value to an integer, but the function, CInt(cboPosition.SelectedValue) is throwing an InvalidCastException. Is there any way that I can get the ValueMember's type to be an Integer?

Dim cn As New SqlConnection(CreditDisputesLogConn)
Dim cmd As New SqlCommand("CustomersLookup", cn)
Dim da As New SqlDataAdapter(cmd)


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Get Item Value From A Combobox Using A Datatable As It's Datasource?

May 20, 2010

How can I get an item value from a Combobox using a datatable as it's datasource? Here's my code for constructing the combobox. This code works, that's why I'm not showing it all, but I want you to know how I'm creating the combobox.

query = "SELECT category_id, name FROM categories ORDER BY name ASC;"
dbCommand = New MySqlCommand(query, dbConnection)


I want to display what is the item you physically see in the combobox that you select.

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Remove Row From Gridview With Datatable Datasource?

Aug 15, 2010

I am using

I have a gridview with a datatable datasource.

What is the best option to update the datatable when i delete a row in the gridview and then show the gridview without that row?

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Synchronise Datasource When Inserting Into A DataTable?

Apr 8, 2011

Can you tell me how to syncronise the a DataSource when inserting a new row into a DataTable? [code]The user enters values in the Textboxes and clicks a save button.At that point I get a concurrency violation when using .Update to get the new row into the database.Can you tell me if I need to add any more code to synchronise everything?

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Datetime Picker Bound To Datatable Format

Apr 7, 2010


what sould i fill in the part after ---addressof--- i dont now what to fill after

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Get Data Bound To A Datagird To A Datatable (VS2003)

Jun 22, 2010

I have a form developed using the Dataform wizard (VS 2003). The Form shows Master-Detail data. The details are showen in a Datagrid. The form automatically loads the data in the Form_load event. Now I want to store the data from the datagrid to a datatable. I am using following code to get the details showen in the datagrid into a dataview. The objdsInvoice is the dataset that holds the Invoice And Invoice_Item data.

Dim DV As DataView
Dim tempDT As DataTable
tempDT = objdsInvoice.Tables("INVOICE_ITEM").Copy


Is there any better way to get the datagird values that are currently displayed into a datatable. The datagrid is bound to the details table in the Master-detail type dataset.

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VS 2008 Query Datatable With LINQ And Set DGV Datasource?

Nov 7, 2011

i need to query the datatable & set the outcome as datagridview controls datasource
Private Sub Txt_Search_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Txt_Search.TextChanged
'routine objective:- Filter datatable & set the datagridview datasource


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Datatable To A Combobox, Using DataSource DisplayMember And ValueMember Properties?

Jul 7, 2008

I have binded a datatable to a combobox, using DataSource, DisplayMember and ValueMember properties. Now I try to set the combobox to a preset value using comboBox.SelectedValue = value. Nothing happens however.


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Forms :: Set The Column Names In A DataTable As A Datasource To A ComboBox?

Aug 4, 2011

I'm trying to setup a form to search for data within an existing DataTable.

FilterColumnsComboBox.DataSource = WOTable.Columns?
FilterColumnsComboBox.DisplayMember = ???
FilterColumnsComboBox.ValueMember = ???


I could hard-code in the column names ("WO_Number",WO_CustID","CustLastName", etc...), but would prefer to pick this up dynamically (partly because I want to reuse this code later).

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VS 2010 Perform Row Delete To Datatable Which Is A Datasource To The Grid?

May 11, 2011

I want to know how to perform row delete to datatable which is a datasource to the grid.

In details: I have a datagridview (dg) and its datasource is set to dtItem. User will select some rows in dg and press 'delete' button.

dg.DataSource = dtItem;

I will perform a loop and delete the records. Here is the code eg:

foreach (DataGridViewRow drw in dg.Rows)
if (drw.Selected)


The problem is it didn't delete correctly. If user selects row index 0 and 1 in dg and delete it, it will delete the first one correctly and then finished cuz no more row is selected in next gridviewrow.

I tried google and didn't find what I want. may be because i don't know the correct keywords I should use to search.

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Handling DataGridView Update When Bound DataSource Empty?

Jun 2, 2009

I have a DataGridView to which I've set a list of objects to the DataSource. (I'm in VS 2005 using VB.) I created the DataGridView by creating a Data Source of type AssetIdentifier and dragging that Data Source onto my form. I want to update the DataGridView when the selection in either a combo box or another DataGridView changes. (Below I'm considering a click in another DataGridView.)

The following works:
Public Class dlgShowAssets
' class member variable
Private assetIdList As List(Of AssetIdentifier)
' pertinent subs and functions
Private Sub RefreshAssetIdentifierDataGridView()
[Code] .....

In this case, I always knew that assetIdList would have at least one element. I'd update the list, and reset the data source of the DataGridView to that list, and all was well. When I applied this to another situation, for which I couldn't guarantee that the list would have at least one element, things would work fine as long as I had at least one element in the list, but if the list became empty, the DataGridView threw System.IndexOutOfRangeException a number of times.

The rows in the DataGridView would not go away if I went from a non-zero number of elements to zero. I tried a workaround, which was to remove all of the elements, add one "dummy" element, and then re-bind the list to the control and it still didn't work. Also, following all of those exceptions, I'd get other similar exceptions when I hovered over the cells in the DataGridView. Some of the members of AssetIdentifier were "Nothing" but I fixed that in the constructor, and the exceptions still occur.

View 1 Replies - Setting Cache As Datatable And Reading It?

Jan 7, 2011

how i see if my cache is empty all my syntax errors are coming when i am trying to see if the cache is null and if it is to run the stored procedure

If RadioButtonList1.SelectedIndex = 0 Then
If Cache["netcache"] = null Then
bcmd.CommandText = "yearlynetsales"


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Setting Report Datasource To Datagridview?

Jun 11, 2011

My current problem is this:I have a form and I have in it three textboxes, 1 button and 1 datagridview; I also have an acceI'm learnig now on how to create a report without a database. But In how to set the datagriview as the datasource for my report

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Loop Datatable And Select Checkboxlist Item Based On The Datatable Field Values

Aug 18, 2011

I am trying to display value of the field ("UserID") for every row exists in datatable to checkboxlist(make the checkboxlist item selected).

I used for loop, but only the field value from last row of RoleUsers table is selected in the checkboxlist.

Here is my code

Private Sub DisplayRoleUser()
Dim conn As SqlConnection
Dim cmd As SqlCommand


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VS 2010 : System.ArgumentException Was Unhandled Message=DataTable 'get_item_list' Does Not Match To Any DataTable In Source

Apr 21, 2010

I am working on a project that takes an xml schema and xml data files and places them into a DataTable, the 2 files are generated from a working table that i have written to disk. I wish to load these 2 files into a DataTable. Here is What i have
Friend Function CreateTable(ByVal tableName As String) As Boolean
Dim table As New DataTable(tableName)
table.ReadXmlSchema(tableName & ".xsd")


this however produces the following error on line 3


System.ArgumentException was unhandled Message=DataTable 'get_item_list' does not match to any DataTable in source.

get_item_list is the parameter passed into this function (tableName)

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Get Subset DataTable From Main DataTable, But Preserve Primary Key & RowErrors?

Apr 16, 2012

I came across a problem with using a BindingSource as my DataGridViews.DataSource. Whenever I applied a filter to a column in the BindingSource and the user makes changes that don't match the column filter the DataGridViewRows would automatically disappear. A similar thing would happen when applying a Sort to a column. If the user made any changes the DridGirdViewRows would automatically sort causing rows to be moved around. This was not ideal for my application and there isn't anyway to stop this from happening with the BindingSource.

To correct this issue I have to use subsets of data. I use a DataView to apply the filter and sort to the main DataTable, which creates the subset DataTable.The problem is when I use the DataView.ToTable method I loose the Primary Key and RowError information. So I have to reapply this information everytime the user filters or sorts the DataGridView.Is there a better way to get a subset DataTable?[code]...

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VS 2010 Datatable - Summarize Multiple Occurrences Of An Item In A Datatable

Jun 5, 2012

I have a datatable that has a resource in one field and hours used in another, it looks like this -

Resource Hours Used
Manager 1
Accountant 1
Field Staff 2
Accountant 3
Manager 4
Manager 1
Administrator 6
Field Staff 4
Manager 0.5
Administrator 1

What I want to do is be able to create a summary of the data table above that groups multiple occurrences of a resource and adds up the hours used for that resource, creating a summary that looks like this -

Resource Hours Used
Manager 6.5
Accountant 4
Field Staff 6
Administrator 7

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Setting A DataTable Column To A Date Format To Sort Correctly

Dec 1, 2011

First off a great piece of code [URL] you saved me soooo much time. I am a somewhat newbee to VB2010 and was wondering how would i go about setting lets say setting column(4) to a date format so that i can get it to sort in the correct order.

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